<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>01  vue</title>
</head>
<body>
    <div id="id">
        {{num}}
        <h3>年龄  {{age}}</h3>

        <h3>姓名  {{uesrname}}</h3>
    </div>
    
</body>
<script>

    function Vue(option) {
        this.target = document.querySelector(option.el);
        let html = this.target.innerHTML;
        

    }

    new Vue({
        el:"#app",
        data:{
            num:100,
            age:18,
            uesrname:"sean",
        }
    })




</script>
</html>